Issues with the Ø8mm BOTTOM TUBE BEARINGv

Hello.
I’m having some trouble assembling the printer.
I build it and when it prints, the X carriage moves a lot and i cant print.

I disarmament the extruder and found that the Ø8mm BOTTOM TUBE BEARINGv
doesn´t slide well by 289mm Ø8mm ROD.
How can i fix this? I couldn´t solve putting oil on both pieces.

If there’s no obstacle in the bearing, I think you’ll need a new one from Velleman. Or maybe the rod is too thick. Can you slide it for instance in one of the sealed bearings? If so, your rod is ok and you need a new tube bearing.
You can open a ticket here: support.velleman.eu

Look in this link it may help.
http://www.k8xxx-3dprinters.crimed.be/w/index.php?title=XY-Carriage_Alignment